Seeking I know you were probably asking trying but this is what I found about DQa and matches (copied from someone's blog but it explains it quite well. I had the test done as I just wanted to make sure we checked everything and we have no match...
It is really difficult to say what is and is not important when TTC with immune issues
SO WHAT IS DQA AND HOW DOES IT IMPACT TTC?
The DQa gene sits on chromosome 6. Part of our immune system one of its key roles is helping the body identify and prevent foreign antigens from attacking and making us sick.
When it comes to DQa we each get a representation from our mother and from our father. These are represented in numbers - eg 1.02, 1.01, 05.05.
Having a genetic match for DQa actually doesn’t impact the health of your embryo or baby.
Instead a match impacts the connection between the paternal DNA contribution (sperm) and the maternal body (uterus).
Normally something in the sperm’s DNA sends a signal to the uterus that this foreign body (embryo) is ok, allowing it to implant.
In the case where the male DNA contribution of the embryo shares the same DQa gene as the mother this message is thwarted.
The uterus then fails to recognise the embryo as a separate body, instead seeing it as its own “self”. The immune system kicks in with NK cells to eliminate the embryo as it views it a risk.
In layman's terms - owing to one number, on one chromosome, my body systematically attacks and rejects our healthy embryos as it can’t tell the difference between my own DNA and my husbands!!
My understanding is that DQa can be the cause of:
Recurrent miscarriage
Failure to implant
The activation of NK cells in the uterus (in response to repeated implantation of DQa embryos)
Secondary Infertility (in response to a DQa pregnancy making it full term causing a build up of NK cells)